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java - mybatis參數(shù)格式化異常:NumberFormatException: For input string:"xx"

使用mybatis注解開發(fā)的時(shí)候，總會(huì)遇到很多問(wèn)題，但是mybatis的注解并不是那么的美好，一些問(wèn)題或者錯(cuò)誤根本不能給出準(zhǔn)確的定位，有時(shí)候，甚至?xí)o出Unknow Source的錯(cuò)誤，獲取就是一個(gè)關(guān)閉標(biāo)簽沒有關(guān)上。此類...

From [Javadiscussion group] 2017-04-18 09:48:57 0  2  1409

JavaWeb Tomcat重新部署報(bào)錯(cuò).

初學(xué)JavaWeb, 每次啟動(dòng)Tomcat有這樣一個(gè)警告 :20-Nov-2016 22:11:12.615 ?? [RMI TCP Connection(2)-127.0.0.1] org.apache.jasper....

From [Javadiscussion group] 2016-11-21 10:09:04 0  3  1409

Why is my cell array offside?

for(int i = 0;i<4;i++) {//行數(shù) for(int j = 0;i<3;j++) {//列數(shù) ImageIcon icon = new ImageIcon("圖片\\...

From [Javadiscussion group] 2018-07-02 08:31:58 0  1  1408

前后端分離中后端提供的RESTFUL接口如何進(jìn)行權(quán)限控制?

今天遇到一個(gè)問(wèn)題我有一個(gè)系統(tǒng),是基于角色的權(quán)限控制.前端自然就是根據(jù)角色來(lái)控制應(yīng)該顯示的視圖.但是為了防止別人直接用httpclient訪問(wèn),那么后臺(tái)肯定也要對(duì)相應(yīng)的權(quán)限進(jìn)行控制.進(jìn)行交互時(shí),我能知道的只有用戶是誰(shuí)從而我...

From [Javadiscussion group] 2016-10-27 10:03:29 0  1  1407

How should the database be designed for dynamic forms?

The requirement is to enter form information in the background management interface, stipulate which forms (ca...

From [Javadiscussion group] 2017-05-17 10:07:19 0  4  1405

java - 調(diào)用多個(gè)第三方接口哪一種方案更好？

目的 用戶在下單的時(shí)候，會(huì)調(diào)用我們的后臺(tái)服務(wù)器，我們的后臺(tái)服務(wù)器又會(huì)根據(jù)不同渠道調(diào)用第三方下單接口，完成整個(gè)下單流程，但是第三方下單接口可能突然出問(wèn)題或者不支持，所以目前我們每一種渠道都配置了好幾種...

From [Javadiscussion group] 2017-04-18 09:29:21 0  7  1402

java - How to stress test the CPU of http service (tomcat)

Premise: Hello everyone, I now need to stress test a tomcat server to find out where the bottleneck of the app...

From [Javadiscussion group] 2017-06-28 09:22:50 0  5  1401

java - 怎么理解JVM中的iload和istore指令

我最近在學(xué)習(xí)JVM，被istore和iload兩條指令困擾了。以下是我查看《Java虛擬機(jī)規(guī)范》得到的解釋 將一個(gè)局部變量加載到操縱棧的指令包括：iload、iload_、lload… 將一個(gè)數(shù)值從操作數(shù)棧存儲(chǔ)到局部變量...

From [Javadiscussion group] 2017-04-18 10:49:52 0  3  1401

In Java, what is the API used by auto-boxing/unboxing?

I recently went to a Java interview and the interviewer asked me this question. I know about boxing and unboxi...

From [Javadiscussion group] 2017-07-05 10:26:57 0  3  1399

java - spring-data-mongo的mongoTemplate在spring的taskExecutor中異步執(zhí)行異常

測(cè)試程序如下： {代碼...} 執(zhí)行結(jié)果： {代碼...} 結(jié)果說(shuō)明： 主線程執(zhí)行時(shí)，mongoTemplate可以正常的查詢出user的內(nèi)容，但是在taskExecutor開啟的子線程中，僅僅輸出了當(dāng)前的線程名，查詢及...

From [Javadiscussion group] 2017-04-18 10:00:23 0  0  1399

java - 貪吃蛇相關(guān)問(wèn)題？

先附上地址：https://github.com/KingJeason/MySnake.git。第一個(gè)問(wèn)題 ：我判斷蛇死亡的函數(shù)是： private void checkDead() { {代碼...} 意思就是遍歷一遍...

From [Javadiscussion group] 2017-04-17 17:55:08 0  1  1399

java - Apache Tomcat security restriction bypass vulnerability (CVE-2016-8735)

How to patch like Tomcat patch

From [Javadiscussion group] 2017-05-17 10:03:10 0  1  1398

How many days does it usually take to develop these 35 interfaces in Java? How many can be completed in one day?

How many days does it usually take to develop these 35 interfaces in Java? How many can be completed in one da...

From [Javadiscussion group] 2017-05-17 10:07:00 0  9  1397

java - 關(guān)于shiro在spring boot下自動(dòng)登錄的問(wèn)題？

我想實(shí)現(xiàn)shiro rememberMe之后，再次訪問(wèn)后自動(dòng)登錄并把一些用戶信息再存入session 我現(xiàn)在是按照http://blog.csdn.net/Q_AN1314...這篇文章，寫了一個(gè)過(guò)濾器，但是在過(guò)濾器里獲...

From [Javadiscussion group] 2017-04-18 10:55:36 0  1  1396

How to send json data to kafka using Java

I only see some news about Java producing STRING type on the Internet. According to Java's producer class, you...

From [Javadiscussion group] 2017-05-17 10:05:08 0  1  1395